Is there a way to add a field from a different table than case table to the case explorer?So to have all fields from case table in case explorer but in addition to have one field coming from a different table?

Currently, that's not possible since there could be a 1...N relation between the case table and other tables. What you could do (if the relation is 1...1) adds the specific attribute you want to the case table in the data integration layer. If the relation is 1...N, you might consider using a PU_FIRST/LAST option to select the value you want before adding it to your case table.

I am not sure, but I think that if you have a N:1 relationship from the case table (CT) to another table (DT), then you will see the fields of the second table in the case explorer.

I should test it, but I haven't a dataset for that at the moment