ENGLEWOOD, Colo. — The Broncos' rookie minicamp concluded Sunday, but the transition for the team's rookies isn't close to over.

Starting Monday, this year's class will join Denver's veterans in organized team activities. Those practices — which allow for the offense to face the defense — will require even more of the team's newest players.

"We talked [about] that to them the other night," Head Coach Vic Fangio said Sunday. "They've got to adjust. That's why the first few days they won't get as many reps as the other guys. They're going to be observing, and when they get their reps, take full advantage of them. Notice the competition, notice the uptick in talent and be ready to go."

Fangio provided several updates on how the first of 12 OTA practices would unfold:

At quarterback, Joe Flacco will take all of the repetitions with the first team, Fangio said. After that, Fangio expects Kevin Hogan, Drew Lock and Brett Rypien to be mixed in "randomly."

"We've got open competition after [Flacco]," Fangio said. "We'll randomly play those guys with the twos and the threes when we do our reps."

Fangio said the Broncos will aim to install at least 90 percent of their defense by the time OTAs and mandatory minicamp end in early June.

"Well, just continue to learn our system and be able to execute it at a fast speed to where there's no hesitation mentally," said Fangio when asked what he wants the defense to accomplish. "We'll add a lot to them. We like to send them home after OTAs and minicamp with at least 90 percent of what we do conceptually so they've got it. And then we start all over again in training camp."

Defensive back Kareem Jackson will continue to "get a lot of work at safety," but Fangio expects the versatile player to also work at cornerback at some point during OTAs.

If cornerback Chris Harris Jr. does not attend the set of voluntary practices, it will not change the team's defensive installation. "The reps he would've gotten will be shared amongst others," Fangio said.

The Broncos' secondary should get a little more depth as OTAs continue. Cornerback Bryce Callahan will practice, Fangio said. Callahan participated in individual drills but was held out of team periods during the Broncos' voluntary veteran minicamp in early May.

Cornerback Isaac Yiadom (shoulder) also seems close to a return. "[He'll be] a little bit limited the first week, but by the second week [he] should be going full."

Fangio also provided updates on guard Ron Leary, running back Phillip Lindsay, wide receiver Emmanuel Sanders and tight end Jake Butt.

Leary and Lindsay will not practice on a full-time basis but Fangio said "they'll be doing some stuff."

Fangio said reporters would see Butt "early in practice doing things," but that he will not practice.

Sanders will also not practice.

Second-round pick Dalton Risner worked at left guard during rookie minicamp, and he will continue to play there during at least the start of OTAs.