Making Style Part/Channels Faster

[HarleyRider]

I have found a style that nicely fits the song Im trying to arrange, except for CHD1 and CHD2.  I have located CHDs that I have copied into my new style to make it better, except these two parts need to be twice the beat of the rest of the parts.

If I double the tempo of the song, the other parts seems way fast.  Is there an easy way to double the beat of a style part?  Ive looked all over for a similar parts but that are double the beat, but can not find anything.