Yo can use graph builder.
_refline= parameter
data public.test(promote=yes);
format starting ending ddmmyy10.;
init='12sep2022'd;
retain init;
do task = 'extract', 'prepare', 'model', 'deploy';
starting=intnx('days', init, rand('integer', 0, 3));
ending=starting + abs(ceil(rand('normal', 10, 3)));
output;
init=ending;
end;
run;
![pic2.png pic2.png](https://communities.sas.com/t5/image/serverpage/image-id/75229i9037D25958564475/image-size/large?v=v2&px=999)
![pic.png pic.png](https://communities.sas.com/t5/image/serverpage/image-id/75230i92087A5004BBC286/image-size/large?v=v2&px=999)