ClaySys AppForms is a provider-hosted app that can be integrated with your Office 365 environment. Follow the steps below to add ClaySys AppForms to your SharePoint site collection.
Steps to Add ClaySys AppForms
Step 1:
Navigate to the Site Contents of your SharePoint site collection.
Step 2:
Click on “Add an App”. In the left-hand navigation pane, select “SharePoint Store.”

Step 3:
In the “Find an App” search box, type “ClaySys”. The search results will display as shown below.

Step 4:
You will see two versions of the ClaySys AppForms application:
ClaySys AppForms Premium
ClaySys AppForms Standard
By selecting either version, users can successfully add ClaySys AppForms to their Office 365 environment.