Create a Google Doc. Name the file
For example. if Bob Adrian Jones is meeting with Jen Tai Yin Lee, the title of the file would be
Use three letter initials when possible since there may be people with the same initials.
The manager, or the more senior person should be listed last. If seniority is the same, the person with the last name that starts with a letter earliest in the alphabet should be listed first.
Share the file with the other person
Add a link to the Google Doc at the top of the Direct Message channel with the other person click on the downward arrow and choose "Edit Header" and paste the link. You can do this by editing the header of the DM channel
Use the file for 1-1s. When it's time for 1-1s you can use the Google Doc to post material in advance and to write notes of your discussions.