Add this to a policy in Jamf Pro to send a notification in a more controlled manner than the Start/End notifications in user interaction settings.

management-action-by-policy.sh

#!/bin/bash

###
#
#            Name:  management-action-by-policy.sh
#     Description:  This script is designed to run with policies to use
#                   Management Action.app to send a push notification to 
#                   a managed Mac.
#             Use:  1- Add script to Jamf Pro server, and optionally add
#                   parameter lables that match the parameters below.
#                   2- Add to a policy, populating the parameters with
#                   the text you'd like to see in the notification bubble.
#            Note:  There is limited space in a bubble so these notifications
#                   need to be brief. You can get away with one decent-sized
#                   sentence or two short sentences. If you use the subtitle
#                   it eats into the space of the message text.
#          Author:  Emily KW
#         Created:  2019-10-11
#
###

title=""            #	"string"
subtitle=""         #	"string"
message=""          #	"string"

[ "$4" != "" ] && [ "$title" == "" ] && title=$4
[ "$5" != "" ] && [ "$subtitle" == "" ] && subtitle=$5
[ "$6" != "" ] && [ "$message" == "" ] && message=$6

"/Library/Application Support/JAMF/bin/Management Action.app/Contents/MacOS/Management Action" -title "$title" -subtitle "$subtitle" -message "$message"

exit 0