How to do center alignment in multirow in Lyx -

How to do center alignment in multirow in Lyx -

i have problem center alignment in lyx. can see on screen.

enter image description here possible fix somehow in lyx have limited options edit code?

thank petr

merge of cells (0,3) (0,6), i'm using lyx version 2.1.3.

to merge of cells you'll need delete text, unmerge, re-merge , add text in.

table in lyx. table rendered.