Assertion: group and ungroup selected assertion feature greyed out as shown on pic below
Go to Solution.
First select 2 or more assertion and then it will be available for you to select 🙂
Click "Accept as Solution" if my answer has helped, and remember to give "kudos" 🙂 ↓↓↓↓↓
View solution in original post
thanks for quick response
Glad it helped you 👍