This article talks about on how to create or edit Teams Templates policies
Teams Templates policies
It will let you create and set up policies that control what templates people in your organization can see. You can use the Global (Org-wide default) policy and customize it, or create custom policies
Lets do it step by step
Login to Teams admin center aka TAC : https://admin.teams.microsoft.com/
Navigate to Teams –> templates policies–> you can have to edit created Global policy

if you want to create a new policy then you need to buy Teams premium license : https://microbrother.com/teams-premium-features-explained-quickly/
click on global policy

click on any one of the policy

you can add channels and required apps in it
you can edit the name of the template

Conclusion:
Post reading above article reader will be able to create or edit Teams Templates policies
Thank you 😇
