Split or merge columns

I've done some `pandasgui` research, but cannot see how to split or merge columns.

For example, my data may have separate date and time columns - which I wish to `merge` into one date-time column. Or, I may have an address column which I wish to `split` into house-number and street-name.

My first guess was to use the reshaper tab, but none of those operations seem to apply.

Any tips welcome :-)