Vertical spacing between the lyrics of two different verses

[Simon Art]

Hi all,

another beginner's question:
if a TTBB vocal score is polyphonic, and two staves, each containing two
voices, are in one system, it might be necessary to assign lyrics (i.e.
two or three verses) to each voice. Then, two voices, let's say lyrics
for Tenor 2 and Bass 1, are between the two staves, in the middle of the
system.

Does anybody know how I can increase the vertical spacing only between
the lyrics of these two different voices ? Within the same voice, the
vertical spacing between the different verses should stay the same as
before.

Thanks in advance
Simon