Learn how to view & populate an investor's activity log in this article.
While manually adding an investor activity is not supported in Visible, you are to understand how different investors are engaging with your Visible Updates, Decks, and Dashboards.
In order to see an investor's activity log, open you Fundraising pipeline and click on an investor as shown below:
From here, click Activity. You will see any interactions that your investor has had with your Visible content as shown below:
Please let us know if you have a additional questions.