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Install Sintel Forms for Microsoft 365

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Sintel Forms is available as an Add-in for Microsoft 365 and in order to use it you must add it onto your Microsoft 365 tenant.


If you want to add Sintel Forms but don’t have admins access to your Microsoft 365 tenant then you simply need to contact the person or group that does have this access. It’s often the case that your Microsoft 365 tenant is managed by an internal IT team or external company. If this is the case simply share the link to this page with them and ask them to contact us if they have any questions.


Installing our Add-in is very easy and generally involves just two simple steps.

#1 Add the Add-in from AppSource to a SharePoint site.

#2 Activate the 14-day trial


If your tenant was created after August 2020 you will have to complete one additional step (Step 3) to authorise it, this step will require tenant admin rights.



You should have site collection admin privileges to add the app but please note that you should avoid using the global administrator role as some customers have been unable to successfully add the app when using the global administrator role.

Step 1 – Add the Add-in to a site

  1. On the site where you want to add an app, click on New > App or click on Settings Settings Button > Add an app.
  2. In the navigation menu on the left select From SharePoint Store.
  3. Click Find more apps in the SharePoint Store.
  4. In the search box type Sintel Forms and then click Search.
  5. Select the “Sintel Forms” app in the listing.
  6. On the app details screen click the button Add It.
    Please note that you may have to click “Switch to the classic SharePoint Store” in order to install the app. According to Microsoft, this is because the SharePoint store supports two types of Add-ins namely 2013 Add-ins and SPFx add-ins. The modern store experience only supports the SPFx add-in type.
  7. Follow the steps to log in with your Microsoft account to get the Add-in.
  8. Click Trust It when asked to complete the deployment.

Sintel Forms Trust App

The installation will proceed and once it’s completed you will see the Sintel Forms tile appear in your site contents.
Sintel Forms Added

Step 2 – Activate the Add-in

  1. Once you have added Sintel Forms to your tenant you need to activate it before it can be used.
  2. To do so you simply need to click on the Sintel Forms Add-in tile within your site contents to open the app homepage and then click Start 14-day trial.
  3. You will be prompted for some details and once you have entered them your 14-day trial will be activated immediately.
  4. After the trial is over you can proceed to use the free version or purchase a license and to do so you simply need to open the app homepage again and click on the “Use free version OR purchase a license” option.

Step 3 – Authorise the Add-in

As mentioned previously this step only applies to tenants created after August 2020.

  1. In some cases after you click on the Sintel Forms Add-in tile within your site contents to open the app homepage you will receive the following dialogSintel Forms Studio App Homepage Before Approval Provided
  2. You simply click Proceed which will open a new browser tab and request you to (A) Sign in and (B) Authorise the app.Sintel Forms Studio Sign in and grant permissions
  3. Once you click Accept you will be redirected to a screen that will attempt to verify that the updated permissions have taken effect. You can either wait for the permissions to be verified or you can close this tab.
    Whether you choose to close the tab or leave it open it is important to note that it could take up to 60 minutes for the permissions to be applied (this process is entirely dependant on Microsoft 365).
  4. If you leave the tab open, once the updated permissions have taken effect you will see a green icon and message confirming this.
  5. You can then close the tab and return to the tab containing the Add-in homepage and refresh the page by clicking the link at the top of the screen or hitting F5 or pressing the refresh button in your browser.Sintel Forms Studio App Homepage After Approval Provided
  6. Once the page is refreshed the information message at the top should disappear and the Add-in should now be ready for use.
    After you have accepted the permissions update it could take up to 60 minutes for the permissions to be applied (this process is entirely dependent on Microsoft 365). If you have previously accepted the permissions previously please wait for up to 60 minutes for them to take effect.

Permissions used by Sintel Forms

Sintel Forms uses delegated permissions to enable users to create forms and edit them. Additionally, if you enable the External Submissions feature then application permissions are also used as this is required to enable external users (those with no access to your tenant) to submit forms. When you install Sintel Forms and authorize it, the process grants it access to read the contents of SharePoint lists and libraries and read user profile data. All of these permissions are required for the application to work correctly.

More info can be found in the following Microsoft article Add an app to a site.

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