First you need to set your skill_castnodex_db.txt:
// <Skill id>,<Cast>,<Delay (optional)>
//
// Cast: 0 - everything affects the skill's cast time
// 1 - skill's cast time is not affected by dex
// 2 - skill's cast time is not affected by statuses (Suffragium, etc)
// 4 - skill's cast time is not affected by item bonuses (equip, cards)
//
// Delay: 0 - everything affects the skill's delay
// 1 - skill's delay is not affected by dex
// 2 - skill's delay is not affected by Magic Strings / Bragi
// 4 - skill's delay is not affected by item bonuses (equip, cards)
//
// Note: Values are bit fields, add them up to combine their effects.
// Note: Delay setting '1' only makes sense when delay_dependon_dex is enabled.
// Example: 46,1,1 = Double Strafe's cast time and delay is not affected by dex.
Now if you want a permanent delay, then add this line on anywhere in there:
264,0,7 // Body Relocation
Then set the delay again on your skill_cast_db.txt