Beyond his technical duties, Macar has shown a commitment to community and professional growth. He served as the Vice President of Finance for the Western University Serbian Society from April 2019 to June 2022. In this volunteer role, he managed annual budgets, organized events, and oversaw the club’s finances, demonstrating leadership and organizational skills 6.2.1.

Macar's approach to coaching emphasizes the importance of developing young talent and creating a positive team culture. He is known for his ability to get the best out of his players, and his teams are often characterized by their energy, creativity, and attacking flair.

The victory of 1945 brought not peace, but a new phase of war: the consolidation of absolute power. Mačar’s skills were now in acute demand. He transitioned into the state security apparatus, OZNA (Department for People’s Protection), later UDBA (State Security Administration). While Aleksandar Ranković was the public face of Yugoslav security—the fearsome "Number Two"—men like Mačar were his lieutenants, executing the messy, bureaucratic work of surveillance, interrogation, and political vetting.