Two things you could try:
1 insert your first bar repeat. Press escape then select the repeat sign and use [alt]click to place other repeat signs.
2. for contiguous repeats, place the first, press escape, make sure it is selected and then press 'r' as many times as needed.
Sib 6.2, 7.5 and 8.5, Windows 10, 8MB RAM, 7TB 7200RPM Storage, Note Performer 2, EWQLSO, EWQLSC, Harmony Assistant and some others.