if and roundup formulas

[numfon_naka]

F(C6="","",ROUNDUP(SUM(L6:N6),2))

C6 = Output
L6:N6 = Worker , Leader , Supv. in the field of Actual

But in the app we will use abbreviations. Because we will also make a template, so we use abbreviations instead.
C6 = Out put
Worker = wk.2
leader = ld2
supv = sp.2

How can we modify this formula?
=IF(C6="","",ROUNDUP(SUM(L6:N6),2))

You can't try to do this.
if(
[output]="","",
Round(sum[wk.2][ld2][sp.2]),2
) )

I need a formula similar to excel. and round the decimal
such as
1.231 will be rounded to 1.24
1.230 will be rounded to 1.23
1.23001 will be rounded to 1.24.

excel example

[dbaum]

DECIMAL(CEILING(value * 100)) / DECIMAL(100)