Group Expressions - 1st expression cannot be grouped?

[helen_pip]

Dear all

I have built a line graph with 3 expressions.  Due to resizing graph issues I now want to create a cyclic group of expressions

I want to group all 3 expressions, but the 1st expression always has the "Group" button unavailable to me.

How can I possibly group all 3 expressions?

Kind Regards

Helen

[helen_pip]

Hi

All fixed. I added an extra expression I.e. 1=1 and promoted it to the top. I then disabled this expression, so my other 3 could be grouped