Running the following code:

peakAnno <- annotatePeak(files[[4]], tssRegion=c(-3000, 3000),
                         TxDb=TxDb.Mmusculus.UCSC.mm10.knownGene, annoDb="org.Mm.eg.db")

plotAnnoBar(peakAnnoList, title = "MeA F/M Peak Annotation")

In the current form plotting 11 annotation categories and want to be able to cut down on what the plot displays, by eliminating some (e.g. 5' UTR) and combining some (e.g. peaks at varying distances from promoter into one promoter category). Was attempting to use to cut down on the categories:

genomicAnnotationPriority

However I don't believe I am using it correctly.

How can I go about doing this? Thank you!