Graphs -> Cacti Server - Logged in Users -> Properties

/usr/bin/rrdtool graph - \
--imgformat=PNG \
--start='1628713266' \
--end='1628799666' \
--title='Cacti Server - Logged in Users' \
--rigid \
--base='1000' \
--height='120' \
--width='650' \
--alt-autoscale-max \
--lower-limit='0' \
COMMENT:"From 2021/08/11 16\:21\:06 To 2021/08/12 16\:21\:06\c" \
COMMENT:"  \n" \
--vertical-label='users' \
--slope-mode \
--font TITLE:10: \
--font AXIS:7: \
--font LEGEND:8: \
--font UNIT:7: \
DEF:a='/var/lib/cacti/rra/cacti_server_users_1102.rrd':'users':AVERAGE \
AREA:a#4668E4FF:'Users'  \
GPRINT:a:LAST:'Current\:%8.0lf'  \
GPRINT:a:AVERAGE:'Average\:%8.0lf'  \
GPRINT:a:MAX:'Maximum\:%8.0lf\n'

Viewing Graph Properties 'Cacti Server - Logged in Users'