You can pause the membership of a member within your Community in the following steps:
1. Click on the Commerce tab on the left side bar.
2. Click on Community.
3. Click on the Community you want to edit.
4. Click on the Members tab on the left.
5. Scroll to to the member you want to pause his/her membership.
6. Click on the 3 dots and select pause membership.
7. To unpause, carry out same steps as above and select unpause membership.
Note that pausing a membership, pauses all payments from the member and blocks his/her access to the community and courses within the community.