On gloss:

zutse
x1 sits [assumes sitting position] on surface x2.
fenpretse in sense "tailor style"
z1 sits in tailor style position/agura/sukhasana on surface z2.
kurtse in sense "pike position"
z1 sits in pike position/staff position/dandasana on surface z2.
kreivi in sense "of a dog etc. as if obeying such a command"
x1 (entity) sits in a squatting position, heraldic sejant position like or as an animal with all legs touching the floor or another surface x2 (entity)

On affix form:

sitna
x1 cites/quotes/refers to/makes reference to source x2 for information/statement x3 (du'u).

In definition:

stizu
x1 is a chair/stool/seat/bench, a piece or portion of a piece of furniture intended for sitting.
cfatse
x1 sits down on x2.
febjbijukpa
x1=ju1 simmers/cooks/prepares food-for-eating x2=j2 by sitting it in simmering liquid x3=ji1=f1 at temperature x4=f2 and pressure x5=f3.
febjukpa
x1=j1 cooks/prepares food-for-eating x2=j2 by sitting it in boiling liquid x3=f1 at temperature x4=f2 and pressure x5=f3
febmlijukpa
x1=ju1 is poaching/cooks/prepares food-for-eating x2=j2 by sitting it in poaching liquid/court bouillon x3=m1=f1 at temperature x4=f2 and pressure x5=f3.
nitytse
z1 sits on surface z2=c1 that is below c2 in frame of reference c3.
tsebi'o
b1=z1 sits down on surface z2.
juprblanca
x1 blanches/cooks/prepares food-for-eating x2 by sitting it in boiling liquid x3 for a short time-duration/interval x4 and then plunged into/placed under running liquid x5, blanched at boiling temperature x6 and pressure x7.
mlatuse
x1 sits in the meatloaf position on surface x2
tserseiza
z1 sits in seiza position on surface z2.

In notes:

pesai (comp!)
restrictive relative phrase marker: semi-permanently associated to; will remain associated unless something breaks that relation
tizma'ekla
k1=m2 uses wheelchair s1=m1=k5, which is in/on surface/medium m3 and is propelled by m4, to come/go to destination k2 from origin k3 via route k4.
asnrlatna
a1 is a/the lotus position/padmasana of body a2 characterized by property/(set of) properties a3 (ka).