When you import a house style, the 'Music text font' field in House Style > Edit All Fonts isn't changed. So go there and change it to the font you expect.

Create a custom ensemble

• House style > edit instruments
• New ensemble…
• Choose options…rename instruments…etc until ensemble is how you want it
• House style > Export house style (for use to import it into scores that need that instrumentation)

Use a custom ensemble in a new or existing score

• House style > Import house style (the one with the custom ensemble)
• Create>Instruments…
• Click on “Choose from:” then click on the custom ensemble name
• Under “Instrument:” click on the top instrument and the shift click on the bottom instrument to choose all the instruments in the custom ensemble
• Choose “add to score” button
• Reorder the instruments as needed under “staves in score” and hit OK button

Switching from a traditional House Style to one based on the InkPen2 font

• Sometimes a few of the fonts are not converted properly, such as the dynamics which may stay in Opus font.
• The correct settings can be set in House Style >Edit All Fonts…
• The following setting will give the desired output for InkPen2

• The following setting will give the desired output for Rich Sigler's Jazz Font