Lock selection in Experiments grid

Assuming I want to select different assays for the same set of cell types, or the same assays for the same cell types for different projects. I could create a huge request resulting in one file that I have to split later locally; a more convenient way could be to lock certain selections in the experiment grid and create separate requests.

Example:

Select cellA through cellZ (lock)

Select various TFs -> create request

Clear selected TFs

Select various histone modifications -> create request

Clear selected HMs

Example 2:

Select cellA through cellZ (lock)

Select various histone modifications (lock)

Select project A -> create request

Clear project A

Select project B -> create request