Hello there, @therese4!
You can select Make active under the ACTION column from the list of your stocks to make an inactive stock active again. Be sure to select All in all sections under the Funnel menu to show a list of all your items. I'll show you how.
- Go to Sales.
- Select Products and Services.
- Beside the Search address on the Funnel menu, select All.
- Find the stock you wanted to make active again.
- Under ACTION, click Make active.
Lastly, I've got you this helpful article for ideas about how you can make a certain group of your stock: Group your products and services into different categories.
Stay safe and give us a comment below if you have any other questions.