Include topics in the output that are not included in the TOC

Yes you click Table of Contents, then you see your TOC name(s) and double click that.

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I updated my version of Robohelp 2020. Now when I select Properties from my topic in the TOC, the Hide in Output checkbox displays. Thanks for all your help.

BTW, when I double click the TOC in the far left column, it wouldn't open up in the topic window. Only in the next column over like in the picture I sent. I'm not sure why that wouldn't work.

You still haven't opened the TOC. You need to double click it so it opens in the same area as the topics.

This is not an update issue. You should always update but it's not going to solve this problem. 

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See www.grainge.org for free Authoring and RoboHelp Information

Won't hurt - you can always roll it back if you find something that blocks you in patch 4.

Do you think I should update my Robohelp version?

This is what it looks like when I select Properties for that topic:

You will find the TOC properties in the TOC. In your screenshot Contents is highlighted. Below that is Table of Contents. Double click that and then open the TOC. 

________________________________________________________
See www.grainge.org for free Authoring and RoboHelp Information

2020.3.32

What patch version of RH2020 are you running?

This is what I see when I click the TOC topic and select Properties