Battle Engine Melody - Limit attack, A question about the special attack "Limit" Options

[Sephiroth996]

In a Battle Engine Melody demo (I don't know if all the demos look the same), there's a special attack called "Limit" and "Tetra" etc. I'v found their configuration in the script but I don't know how to change the skill to be used in "Limit". In my demo, it uses the Omnislash skill and I want to know how to change the skill to be used. Thanks in advance to anyone who tries to help