Hi, and Welcome here.
Next time please try to give a better title.
see man top about the flags/usage of top:
Code:
-o :Override-sort-field as: -o fieldname
Specifies the name of the field on which tasks will be sorted, independent of what is reflected in the configuration file. You can prepend a `+' or `-' to the
field name to also override the sort direction. A leading `+' will force sorting high to low, whereas a `-' will ensure a low to high ordering.